DY
Fair enough, though It depends on what you mean by life support. But that is another topic.
Though there is a difference once the person is alive, then he is fully alive until dead. Whears a fetus is not fully alive while dependent on the mother. IT is like her foot, or yerech imo if you will.
“Are you also unsure that murder is immoral?”
No. why?
I am saying that abortion in society’s view (which is not immoral or unreasonable) and according to some in halacha as well is not murder. (though not neccesarily mutar)